Easy Steps to Convert MBOX to MSG Files in Bulk

User Query:I want to convert my MBOX files from Thunderbird into MSG format to access them in Outlook. Is there a reliable tool for bulk migration?

Summary: One of the common reasons to convert MBOX to MSG file is for users who switch from email clients like Thunderbird or Apple Mail to Microsoft Outlook. Outlook widely supports the MSG file, which makes it convenient for storing single emails with attachments. In this blog, we’ll explore manual techniques and highlight a professional automated solution using the MBOX Converter Tool for bulk migration.

Reasons to Change MBOX to MSG

There can be many reasons to move their mailbox data into MSG format. Below we highlighted some of them:

  • Outlook Compatibility – MSG files are the native format of Outlook, but MBOX file is not directly supported by Microsoft Outlook.
  • Better Organization – MSG file saves one email per file, which allows you to organize, rename, and move individual emails.
  • Backup and Archiving – MSG format makes backup and archiving more convenient. The MSG file makes it easy to locate older emails without digging through a huge MBOX file.
  • Selective Sharing – You can share just one email with colleagues or clients. You don’t need to export the entire mailbox.
  • Search Convenience – It is easy to search an MSG file because it saves files separately.

Manual Methods to Convert MBOX to MSG File

If you want to access your MBOX file in Outlook, you need to convert it to MSG format. In this section, we will go through manual methods, which are reliable for a small mailbox, and a free DIY method. Use a professional solution for a large mailbox or a faster and accurate process with an error-free result.

The manual process of migration is divided into three steps. Follow the steps carefully to export MBOX to MSG format.

Step 1: Import MBOX File into Mozilla Thunderbird

  1. To begin with, launch Thunderbird and open Tools > Add-ons and Themes.
  2. Then, in the search bar, type ImportExportTools NG and install the extension.
  3. Step-2
  4. After that, restart Thunderbird to activate the add-on.
  5. Now, go to Local Folders, right-click, and create a new folder.
  6. Step-5
  7. At last, right-click the folder, choose ImportExportTools NG > Import MBOX file, and select your MBOX file to load the emails.

Step 2: Export Emails and Access Them in Outlook

  1. Firstly, select the emails you want to convert from the newly imported MBOX folder.
  2. Then, right-click and choose ImportExportTools NG > Export All Messages In folder > EML Message Format.
  3. Step-2
  4. After that, pick a destination folder on your system to store the exported .eml files.
  5. Step-3
  6. Furthermore, open Microsoft Outlook on your computer.
  7. At last, drag and drop the saved EML files into an Outlook folder.

Step 3: Save Emails in MSG Files

  1. Firstly, open any email in Outlook that you want to save.
  2. Then, go to File > Save As.
  3. Now, in the Save As type menu, select Outlook Message Format – Unicode (*.msg).
  4. Finally, browse to your desired location, click Save, and your email will be stored as an MSG file.
  5. Step-4

Limitations of Manual Methods

  • These methods are time-consuming and not suitable for bulk conversion.
  • You may lose attachments or metadata during the transfer.
  • Manual steps require technical knowledge and repeated efforts.
  • Converting thousands of MBOX emails with the manual method is impossible.

Automated Solution to Convert MBOX to MSG

For large volumes of data, an automated method offers you accuracy and speed. Professional software can finish the process in just a few clicks without any risk of data loss. Also, this tool converts your MBOX file into MSG, PDF, PST, DOC, DOCX, etc. Moreover, you can use this efficient tool to import MBOX file into Gmail.

Steps for MBOX to MSG Conversion

  1. To start with, download the MBOX Converter Tool.
  2. Then, select and open any MBOX file or folder, and click Next.
  3. After that, pick and preview your MBOX file/folder and click Next.
  4. Furthermore, choose the MSG file format and apply features.
  5. Finally, set the destination path for the file and click Convert.

Advantages of Automated Method:

  • Bulk Conversion – you can easily export multiple MBOX files to MSG format in a single process.
  • Preserves Data Integrity – It ensures that your emails, attachments, and folder hierarchy remain intact.
  • User-Friendly – This tool has a user-friendly interface, which makes it easy to use, even by a non-technical user.
  • Faster Processing – Using this tool makes the process more accurate and faster. Also, using a tool for migration is worthwhile and time-saving.
  • Multi-Format Support – it can convert your file into more than 10 file formats, such as MSG, PST, PDF, DOC, HTML, etc.

Conclusion

To conclude, migrating emails is a difficult task when you want to switch email platforms. Using the manual methods is complex and recommended for large mailboxes. To ensure a smooth and risk-free process, it is recommended to use a professional solution to convert MBOX to MSG files in bulk. This tool is most efficient in conversion and widely popular for its faster, secure, and accurate results without any hassle.

Frequently Asked Questions

Q1. How do I convert MBOX File to MSG?

Ans. You can convert it with manual methods or with a professional tool. If you have a small mailbox, then you can go with a manual approach, but for a large mailbox, using a professional tool is a good practice.

Q2. What is the best software to convert MBOX to MSG with attachments?

Ans. The CloudXena MBOX Converter Tool is the best software utility to convert your MBOX files into different formats. Through this tool, you can save your files with or without attachments.

About The Author:

I, Simran Bhatia am a Technical Content Writer specializing in data management, email migration, and data recovery IT solutions. My focus is on simplifying complex processes into clear, practical guides that combine technical accuracy with real-world value for IT admins, decision-makers, and everyday users. For me, writing is not just about explaining technology, it’s about making it accessible, reliable, and valuable for readers.

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